CVE-2026-16862: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-16862 is a critical vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1, involving a stack buffer overflow that could allow remote attackers to execute arbitrary code without any privileges or user interaction.
AI Analysis
Technical Summary
This vulnerability (CWE-787: Out-of-bounds Write) affects IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1. It allows a remote attacker to exploit a stack buffer overflow to execute arbitrary code. The CVSS 3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently provided in the available data.
Potential Impact
Successful exploitation could lead to remote code execution with full impact on confidentiality, integrity, and availability of the affected systems. This could allow attackers to fully compromise the affected IBM AIX systems remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is indicated, administrators should monitor IBM's advisories closely and apply any forthcoming patches promptly.
CVE-2026-16862: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-16862 is a critical vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1, involving a stack buffer overflow that could allow remote attackers to execute arbitrary code without any privileges or user interaction.
CVSS v3.1
Score 9.8critical
Affected software
cpe:2.3:a:ibm:aix:7.2:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.2.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.3:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.3.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_vios:4.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_vios:4.1.0:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787: Out-of-bounds Write) affects IBM AIX 7.2 and 7.3 and IBM PowerVM VIOS 4.1. It allows a remote attacker to exploit a stack buffer overflow to execute arbitrary code. The CVSS 3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. No official remediation or patch information is currently provided in the available data.
Potential Impact
Successful exploitation could lead to remote code execution with full impact on confidentiality, integrity, and availability of the affected systems. This could allow attackers to fully compromise the affected IBM AIX systems remotely without authentication or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is indicated, administrators should monitor IBM's advisories closely and apply any forthcoming patches promptly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T03:54:41.657Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a860993acd9273b498b4c5b
Added to database: 08/19/2026, 19:52:51 UTC
Last enriched: 08/19/2026, 20:08:21 UTC
Last updated: 08/19/2026, 22:32:33 UTC
Views: 4
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